15854556245797 has 8 divisors (see below), whose sum is σ = 15869267795736. Its totient is φ = 15839849786112.

The previous prime is 15854556245789. The next prime is 15854556245807. The reversal of 15854556245797 is 79754265545851.

It can be written as a sum of positive squares in 4 ways, for example, as 11645354175841 + 4209202069956 = 3412529^2 + 2051634^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15854556245797 - 2³ = 15854556245789 is a prime.

It is a super-2 number, since 2×15854556245797² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15854556285797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4973913 + ... + 7513249.

It is an arithmetic number, because the mean of its divisors is an integer number (1983658474467).

Almost surely, 2^{15854556245797} is an apocalyptic number.

It is an amenable number.

15854556245797 is a deficient number, since it is larger than the sum of its proper divisors (14711549939).

15854556245797 is a wasteful number, since it uses less digits than its factorization.

15854556245797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545127.

The product of its digits is 2116800000, while the sum is 73.

The spelling of 15854556245797 in words is "fifteen trillion, eight hundred fifty-four billion, five hundred fifty-six million, two hundred forty-five thousand, seven hundred ninety-seven".